abaqus可用的用户子程序，可以考虑混凝土弹性模量随时间，应力变化等情况下的徐变。可以考虑徐变恢复。-creep of concrete

由于基于积分的离散计算所求出的响应值是基于积分点上的，为了求出实际点上的响应，如应力场，需要进行应力恢复(Since the response value obtained from the discrete calculation based on integration is based on the integration point, in order to find the response at the actual poi